Reject call not working [answered]

When you have an incoming call you get the option to accept (pull down) or mute (pull up), when the call is muted that option is replaced by the option 'decline', i.e. to reject a call you need to pull up twice. Actually I think it's nice this way, so you don't reject by accident.

It's definitely intended.
Actually there's a sort of social code behind it: Never paid attention to it myself but often when people reject calls the caller feels put off.
So think of it as a polite way of telling the person 'can't answer right now' instead of 'i won't talk to you'.

Also, not a bug :)

im answer to your edit: what if you have the phone in your hand? instead of having to turn the phone for muting you can use the pulley.
if it's not complicating usage, having multiple ways of doing the same thing can actually improve UX

It is definitely new and confused me, too. But now reading and thinking about this I actually do like it. Sometismes in a train or office you just want to silence the ringing sound asap and only then decide to answer or decline/send message. Good.

no, its not new! its there the very beginning. just before mute/silence was the first option, and there were other options as well...